package com.sky.mapper;

import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Update;

import java.util.List;

@Mapper
public interface ShoppingCartMapper {
    /**
     * 查询购物车内是否有该物品
     * @param shoppingCart
     * @return
     */
    List<ShoppingCart> selectCartById(ShoppingCart shoppingCart);

    /**
     * 修改购物车中同种物品的数量
     * @param cart
     */
    @Update("update shopping_cart set number = #{number} where id = #{id}")
    void updateNumber(ShoppingCart cart);

    /**
     * 添加购物车
     * @param shoppingCart
     */
    @Insert("insert into shopping_cart (name, image, user_id, dish_id, setmeal_id, dish_flavor, amount, create_time)\n" +
            "VALUES (#{name},#{image},#{userId},#{dishId},#{setmealId},#{dishFlavor},#{amount},#{createTime})")
    void insertCart(ShoppingCart shoppingCart);

    /**
     * 清空购物车
     * @param userId
     */
    @Delete("delete from shopping_cart where user_id = #{userId}")
    void cleanShoppingCart(Long userId);

}
